Air
Mechanical Specifications
RKNL-B Series
63
Guide Specifications RKNL-B073 - 151
Note about this specification: Copying this document directly into your building specification is permissible.
GAS HEAT PACKAGED ROOFTOP
HVAC Guide Specifications
Size Range: 6 to 12
1
/2 Nominal Tons
Section
Description
23 06 80 Schedules for Decentralized HVAC Equipment
23 06 80.13 Decentralized Unitary HVAC Equipment Schedule
23 06 80.13.A. Rooftop unit schedule
1. Schedule is per the project specification requirements.
23 07 16 HVAC Equipment Insulation
23 07 16.13 Decentralized, Rooftop Units:
23 07 16.13.A. Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a minimum 3/4-in. thick, minimum 1-1/2 lb density, flexible fiberglass insulation
bonded with foil face on the air side.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
3. Insulation shall also be mechanically fastened with welded pin and retainer washer.
23 07 16.13.B. Gas heat compartment:
1. Aluminum foil-faced fiberglass insulation shall be used.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
3. Insulation shall also be mechanically fastened with welded pin and retainer washer.
23 09 13 Instrumentation and Control Devices for HVAC
23 09 13.23 Sensors and Transmitters:
23 09 13.23.A. Thermostats
1. Thermostat must
a. energize both “W” and “G” when calling for heat.
b. have capability to energize 2 different stages of cooling, and 2 different stages of heating.
c. must include capability for occupancy scheduling.
23 09 33 Electric and Electronic Control System for HVAC
23 09 33.13 Decentralized, Rooftop Units:
23 09 13.13.A. General:
1. Shall be complete with self-contained low-voltage control circuit protected by a fuse on the 24-V transformer side (B073-B150
units have a resettable circuit breaker).
2. Shall utilize color-coded wiring.
3. Unit shall be include self-contained low-voltage control circuit protected by a fuse on the 24-V transformer side with a reset-
table circuit breaker.
4. The heat exchanger shall be controlled by an integrated furnace controller (IFC) microprocessor. See heat exchanger section
of this specification.
5. Unit shall include a minimum of one 8-pin screw terminal connection board for connection of control wiring.
23 09 33.23.B. Safeties:
1. Compressor over-temperature, over current.
2. Low-pressure switch.
a. Units shall have low pressure, loss of charge automatic reset device that will shut off compressor when tripped.
3. High-pressure switch.
a. Unit shall be equipped with high pressure switch manual reset device that will shut off compressor when tripped.
4. Automatic reset, motor thermal overload protector.
5. Heating section shall be provided with the following minimum protections:
a. High-temperature limit switches.
b. Induced draft motor pressure switch.
c. Flame rollout switch.
d. Flame proving controls.
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